This is a channel about the restoration of art on paper, and the art of paper restoration.
Using sympathetic methods, paper can seldom be made like new, but its condition can often be improved.
I'd discourage anyone from trying the treatments in these videos themselves. Hence, the given information on materials, timings and concentrations is often incomplete. Paper restoration requires knowledge on the morphology of paper and printmaking, a basic understanding of chemistry, and a delicate touch.